Retention of soil organic matter by occlusion within soil minerals

Chi, Jialin; Fan, Yuke; Wang, Lijun; Putnis, Christine V.; Zhang, Wenjun

doi:10.1007/s11157-022-09628-x

Cited by 29 publications

(8 citation statements)

References 148 publications

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“…Using a P-group or DOM-functionalized AFM tip, measurements involved the approach and retraction of the tip from Mt at varying retraction rates. The representative force–distance curve provided information on the sample’s mechanical characteristics (Figure B). , Adhesion forces and Gibbs binding energies (Δ G b ) of DOM/P with Ca–Mt exceeded those with Fe–Mt (Figure C–F and S26). This difference is attributed to the stronger interactions between Ca ions and the π* C  C–O of phenolic moieties in DOM compared to Fe ions .…”

Section: Resultsmentioning

confidence: 99%

Differential Adsorption of Dissolved Organic Matter and Phosphorus on Clay Mineral in Water-Sediment System

Yu,

Gan,

Zhang

et al. 2024

Environ. Sci. Technol.

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Lake sediments connection to the biogeochemical cycling of phosphorus (P) and carbon (C) influences streamwater quality. However, it is unclear whether and how the type of sediment controls P and C cycling in water. Here, the adsorption behavior of montmorillonite (Mt) with different interlayer cations (Na+, Ca2+, or Fe3+) on dissolved organic matter (DOM) and P was investigated to understand the role of Mt in regulating the organic carbon-to-phosphate (OC/P) ratio within freshwater systems. The adsorption capacity of Fe–Mt for P was 3.2-fold higher than that of Ca–Mt, while it was 1/3 lower for DOM. This dissimilarity in adsorption led to an increased OC/P in Fe–Mt-dominated water and a decreased OC/P in Ca–Mt-dominated water. Moreover, an in situ atomic force microscope and high-resolution mass spectrometry revealed molecular fractionation mechanisms and adsorptive processes. It was observed that DOM inhibited the nucleation and crystallization processes of P on the Mt surface, and P affected the binding energy of DOM on Mt through competitive adsorption, thereby governing the interfacial P/DOM dynamics on Mt substrates at a molecular level. These findings have important implications for water quality management, by highlighting the role of clay minerals as nutrient sinks and providing new strategies for controlling P and C dynamics in freshwater systems.

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Section: Resultsmentioning

confidence: 99%

Differential Adsorption of Dissolved Organic Matter and Phosphorus on Clay Mineral in Water-Sediment System

Yu,

Gan,

Zhang

et al. 2024

Environ. Sci. Technol.

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“…On the other hand, the carboxylic acid groups on the poly(methacrylic acid) polymer provide electrostatic interaction between the guest MOF nanocrystals and the host calcite. It is the surface polymer that enables the attachment of the guest MOF nanocrystals onto the growing surface of the calcite, followed by the gradual engulfment by the growing steps of the calcite crystals. − Owing to this unique incorporation process, the host calcite crystals remain long-range-ordered after MOF incorporation. Importantly, this incorporation strategy is generic, which is demonstrated by the additional experiments in which spherical silica nanoparticles after polymer modification can also be efficiently incorporated into calcite crystals using the same route (Figure S11).…”

Section: Resultsmentioning

confidence: 99%

Metal–Organic Frameworks@Calcite Composite Crystals

et al. 2022

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The direct incorporation of guest crystals into another type of host crystals during the formation of the latter is technically challenging due to the large difference in surface energy for different crystalline components. Nevertheless, we herein demonstrate that metal−organic frameworks (MOFs, UiO-66-NH 2 as a model guest crystal) after postsynthetic modification with poly(methacrylic acid) can be efficiently incorporated into calcite single crystals, forming a unique composite structure where the MOF crystals are uniformly distributed throughout the whole calcite host crystals. Remarkably, such MOF@calcite composite crystals exhibit superior performance in fluoride removal compared with the MOF or calcite alone. Moreover, this incorporation strategy is general as it can be extended to other guest particles. In principle, this study opens up a versatile avenue for the rational design and preparation of a wide range of hybrid functional materials with controllable compositions and enhanced physicochemical properties.

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“…SOM can be retained, protected, and stabilized by soil minerals via occlusion either by aggregation or within growth hillocks, as the occluded organic substances in organo‐mineral microaggregates could be potentially inaccessible to the microbes and secreted enzyme (Chi et al, 2022). Therefore, we speculate that inorganic amendment could further promote the formation of microaggregates to protect and retain organic amendments.…”

Section: Discussionmentioning

confidence: 99%

“…In conclusion, the organic amendments that can increase the effective chemical composition fractions (O‐alkyl C, di‐O‐alkyl C, and aromatic C) of solid‐state SOM have stronger and longer lasting effects on the water stability of aggregates. In addition, both reactive and recalcitrant OM could be retained and protected by occlusion into minerals (Chi et al, 2022). The 13 C NMR spectra showed that inorganic amendment may have protective effects on O‐alkyl C and di‐O‐alkyl C (Figure 2), while the effect may be more obvious with the increase in incubation time.…”

Section: Discussionmentioning

confidence: 99%

Effects of different amendments on aggregate stability and microbial communities of coastal saline–alkali soil in the Yellow River Delta

Yao

Yang

et al. 2023

Land Degrad Dev

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Organic amendments have been widely used in coastal saline–alkali soil remediation; however, the mechanisms involved and the interactions between organic and inorganic amendments are still unclear. In this work, furfural residue (particulate; C/N ratio: 51.87; O‐alkyl C + di‐O‐alkyl C: 42.35%, aromatic C: 40.89%) and black liquor (dissolved; C/N ratio: 3.11; O‐alkyl C + di‐O‐alkyl C: 32.20%, aromatic C: 28.32%) were tested to examine their effects on chemical properties, water‐stable aggregate fractions, chemical compositions of solid‐state soil organic matter (SOM), gloaming‐related soil protein contents, and microbial communities of coastal saline–alkali soil under a 400‐day incubation experiment. Furthermore, organic amendments mixed with mineral amendment (4:1) were employed to explore the interactions between organic and inorganic amendments. Furfural residue had stronger and longer effects on soil macroaggregate stability (~240 days, intense) than black liquor (~15 days, weak), and mineral amendment addition had a positive effect on the stability of microaggregates. Our results revealed that qualities (primary form, C/N ratio, and chemical composition) of organic amendment which can change microbial communities by increasing soil C/N ratio and effective chemical compositions of solid‐state SOM, are the key factors in promoting the rapid formation and longer stability of coastal saline–alkali soil aggregates. Moreover, inorganic amendment addition can further improve the formation and stability of microaggregates rather than those of macroaggregates. This study provided a much‐needed technical basis for remediation of coastal saline–alkali soil.

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Retention of soil organic matter by occlusion within soil minerals

Cited by 29 publications

References 148 publications

Differential Adsorption of Dissolved Organic Matter and Phosphorus on Clay Mineral in Water-Sediment System

Differential Adsorption of Dissolved Organic Matter and Phosphorus on Clay Mineral in Water-Sediment System

Metal–Organic Frameworks@Calcite Composite Crystals

Effects of different amendments on aggregate stability and microbial communities of coastal saline–alkali soil in the Yellow River Delta

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